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What is the recipe for live rock? if I remember right it's 4 parts crushed oyster shells and 1 part cement. Or is it 5 to 1? Thanks.

I'm through. That was kind of harrowing the first time. It ended up kind of breaking through at the end. The 'core' has a really sharp collar on the bottom side.

I'm using a rubber seal calked to the tank. i'm letting the calk dry some now. A minute seems fast. Thanks.

1 3/4". I was about 1/2 way through when the water reservoir i had set up gave way. it's loud! I was applying pressure in 'pulses'.

how long should it take to drill a hole through 3/8" aquarium glass? How hard should i be pushing? Thanks.

Thanks for the pics. I'll check out those screens. That gives a lot more options for rock placement.

My logic was that the SCWD was going to be the limiting factor. Since the system is going to be alternating it's return, one at a basically. So two 1" drains will be supplying one 1" return. I'm curious about the screens from Lowe's or HD you mentioned? I had planned to use the conical screen...

No, i would like a lionfish and a 'Popeye Catalufa Soldierfish'. I could make the intake as large as I need. Should i restrict the flow or get a smaller pump? I will have ball valves at all of the in and outlets if i need to replace the pump or whatever.

It's a little more than a 100 gallon (5'x1.5'x2') with a 55 gallon sump. I was going for as much flow as I could afford. I believe the pump and the SCWD both have 1" in and outlets, so I went with 1" bulkheads and PVC. I had the tank set up several years ago, and bought the equipment 8 months...

1" bulkheads, mag-drive 2400 gph and a 1" SCWD wave maker. I do plan to have rock work covering the intakes. The return from the overflow, which is centered on the back, come over the overflow and let out on either side at the bottom of the tank. I will have 20 degree elbows on the loop outlet's...

Both. The 2 drains in the bottom corners. And the 2 returns in the top corners.

I'm drilling my tank for a closed loop system. How far from the edges of the tank should I drill them? I was thinking 3" from the top and sides. And 5" from the bottom, because of the sand bed. Thoughts? Thanks.

Originally Posted by acrylic51 It is never recomended to choke or downsize the input side of a pump. It's allowable on the output side. Why must it be 1" input? The pump i was looking at is 3/4" in and out. I have decided on holes for 1" bulkheads and the 1" wavemaker. I was just thinking...

I'm looking for a 700+/- gph pump with a 1" input and output. Any suggestions? Thanks.

I'm planing a closed loop system with a SCWD (wave maker). I don't want to have to buy 2 diamond hole saw drill bits so I was wondering if I could use 1" holes for the supply and return? The limiting factor is going to be the pump and/or the return with the SCWD. I was going to go with a 500 or...

Originally Posted by Cranberry Hmmm... no brainer, huh? I have some AWESOME tanks for having no brains. Relax, I meant for me. As big of an investment as this is, i don't want to take the chance. My water tastes bad, I wouldn't want to swim in it.

I decided on buying an RO/DI unit. I don't have anyplace to mount it but I plan to build a stand. It was a no brainer. Thanks to everyone for their response.

I would like to see the pictures if you can find them. I checked out Harbor Freight, they have really cheap diamond bit sets. I've used a dremel in the past, I remember it zipping out of control across the wood. I would clamp a plywood template in place before trying it. I would need 4 holes...

My original idea would have drawn from the display tank, it remains at a constant level, right to the top of the overflow, even when the system shuts down. But I really didn't think that was a great idea anyway, pumps and water up next to my lights. I would like to check out your old posts, and...